CMake 4.2.1 available for download

Announcements
1

We are pleased to announce that CMake 4.2.1 is now available for download.

Please use the latest release from our download page:
https://cmake.org/download/

See also the release notes and release milestone

Thanks for your support!

Changes made since CMake 4.2.0:

Ben Boeckel (1):

  • MSVC: Restore pre-4.2 default PDB paths

Brad King (25):

  • ci: Update CMake version to 4.2.0
  • VS/Android: Use ApplicationTypeRevision 3.0 in VS2026
  • Tests/RunCMake/GeneratorToolset: Fix Visual Studio 18 2026 host arch on ARM64
  • Help: Fix CPack AppImage Generator heading capitalization
  • Help: Add 4.2 release note for CPack AppImage generator
  • ci: Tolerate sccache server stop failures on Windows
  • Tests/TryCompile: Improve error message formatting
  • ci: Fix LLVM/Clang nightly CI job tags on Windows
  • ci: Enable c++modules shared libraries test on VS ARM64 jobs
  • ci: Update Windows jobs to VS 2026
  • Source: Improve detection of Linux architectures requiring explicit libatomic
  • ExternalProject: Fix environment modification ops named with underscores
  • Emscripten: Restore placement of source files on compile command-lines
  • Emscripten: Drop hard-coded -fPIC flag
  • Tests/RunCMake/Emscripten: Add tests covering try_compile COPY_FILE
  • ci: Make node available to Emscripten tests
  • Emscripten: Fix try_run to run the .js file and not the adjacent .wasm
  • Emscripten: Provide CMAKE_<LANG>_COMPILER_ARCHITECTURE_ID
  • StdIo: Restore Windows Console I/O modes on Ctrl-C
  • Help: Replace QtCreator link with its permanent redirect
  • VS: Restore support for VS 2019 with toolset v142 versions before 14.29
  • FASTBuild: Add internal helper for intermediate directory creation
  • FASTBuild: Fix default MSVC compiler PDB paths
  • Help: Add 4.2 release note about VS flag suppression
  • CMake 4.2.1

Craig Scott (1):

  • fileAPI: Silently ignore non-target order dependencies

Hirofumi Nakamura (1):

  • Help: Document Renesas compiler toolchain

Matthew Woehlke (5):

  • CPS: Fix exporting definitions
  • cmExportCommand: Fix PACKAGE_INFO argument parsing
  • CPS: Fix exporting definitions in CMake 4.1
  • export: Improve error message consistency
  • cmake_file_api: Improve error message consistency

Tarun Prabhu (1):

  • LLVMFlang-Fortran: Use -J instead of -module-dir

Vito Gamberini (1):

  • export: Fix exporting targets with multiple file sets